Crushing-mill.



No. 879,175. PATENTED PBB.18, 1908.

. F. A. HUNTINGTON.

CRUSHING MILL.

AHLI'CATION'V FILED HAB..8,1B07.

. /6. l ml l 1y. 4

\ 8. 1` ;V d 1J. 5 1,720 16 17 7 5 228 l 5 7 IIIII IIllz l vhvll IWI' 27 1- 4' z. z2. La y 3. gg .a5- 10 M5 9 25 a 55 HW I 5 Z' 13,\

23 I ZZ,

/VITNESSES.' 1N VIL'NTOK.

y/tnd( BY j* T awk/ ATTORNEY.

, in elevation plane 13 substantially horizontal and parallel UNITED sTATEs PATENT oEErcE.

FRANK A. HUNTINGTON, OF SAN FRANCISCO, CALIFORNIA.

CRUSHING-MILL.

`Specification of Letters Patent.

Application filed March 6| 1907. Serial N0. 360.845.

No. 879,175. Patented Feb. 18, 1908.

To all whom it may camera: l faces of the die 'and shoe are horizontal Be it known that I, FRANK A. I-IUNTING- l throughout their cross sections, the effect is ToN,acitizen of the United States, residing at y that while the entrance of the ore between the city and county of San Francisco, and. i them is easy, its discharge is not well directed State of California, have invented certain l against the rim screens'. Again, 4where the new and useful Improvements in Orushingcrushing surfaces of the die and shoe are Mills, of which the following isa speciiicawholly inclined to the horizontal, the effect is tion. v that while the discharge is good, the entrance My invention relates to crushing mills of. of the ore between them is diiiicult. Also in the roller type; and it consists in the novel cases where these surfaces are inter-curved, construction of ring die and roller shoe forml as in my patent above mentioned, that is, ing the crushing surfaces, and also in the jone concave and the other convex, the effect novel construction of the connection beis that both the entrance and discharge are tween the roller and the driver, as I shall. diiiicult. What is required is a straight hereinafter fully describe. horizontal entrance portion and a straight VThe objects of my invention are, first, to inclined discharge portion, so that the ore provide for an easy entrance of the ore to the may find easy access to the crushing surcrushing surfaces, and the discharge of the faces, and the pulp be discharged therefrom pulp therefrom directly against the screens freely and directly against the rim screens. of t e pan rim; and, second, to provide a sim- The construction here shown fully serves ple, durable and easily placed connection for these requirements, and in addition thereto the roller, which engages it wholly from its l affords a firm rest for the roller, the horilower side, leaving its upper side free of ob* I zontal portion 13 bearing the stress of the structions. rollers weight, and the inclined portion 14 Referring to the accompanying drawings guiding it accurately in its rolling path. Figure 1 is a vertical section of the mill, with The second improvement lies in the conthe rollers and their connections shown party struction of thecrank connection of the roller and partly in broken section. with the driver, said connection being one Fig. 2 is a section of one of the rollers, taken which engages the roller wholly from its inner through its crank, on line xof Fig. 3. and lower side, leaving its outer and upper Fig. 3 is a side elevation of one of the rollers side free of any arms or other connections showing its connections. Fig. 4 is a detail r which offer obstructions and impediments to section of the hanger. free access to the roller, and the falling away 1 is the pan having the centra] cone 2 in of any materials which tend to accumulate which is rigidly fitted the spindle 3, from the on the upper side. to p of which is hung by its sleeve 4 the driver In the aXis of the roller is slipped a two 5, driven by a pulley 6, secured to the part bushing 15, Fig. 2, one part from each sleeve, the ore being fed through holes 7 in side. An aXle pin 16 passes through this the driver from'a ho per 8 thereon; all subbushing, and the roller turns on the pin. The stantially as disclose( in my previous patent. outer end 17 of the pin is reduced and re- No. 556,466 dated March 17, 1896. In the ceives a nut 18, which through a washer 19, pan is the ring die 9 upon which the ore is firmly clamps the pin to the bushing. A crushed by the shoe 10 of the roller l 1. protecting cap 2 0 secured to the roller, covers 12 are the screens of the pan rim, and 33 is this outer .bearing of the roller. The inner the discharge. trough outside the screen.

end of the pin is keyed or otherwise secured My first improvement consists in the fast in the hub 21, of the crank 22, said hub shape of the crushing surfaces of the ring die entering a socket 23 in the roller hub and 9 and the roller .shoe 10. As will be seen by bearing against the bushing. Thus the nut reference to Fig. 1, the inner portion of the 18 tightens the crank to the ushing and comcrushing faces of these two parts is a straight pletes the inner bearing. The other end of the crank 22 has a hub 24, about which is pivotally fitted the sleeve 25 on the lower end of a hanger 26, the top plate 27 of which is bolted solidly to the driver 5, as seen in Fig. 1. The pivotal joint between the crank hub 24 and the hanger sleeve 25 is completed by a portion is also a straight plane 14, but eX- tends at an upward inclination meeting the horizontal portion at an obtuse angle.

In constructions where the crushing surwith the bottom of the pan, and the outer end, said nut acting against pin 28, which is headed in and passes through the hub and receives a nut 29 on its outer a washer 30 seated in the end of the sleeve. By this construction the roller is hung entirely from its under side, leaving its upper side free of all obstructions, and enabling a suitable protecting cap to be applied. rIhe roller is easily mounted and can be readily removed.

81 is a scraper, secured by its arm 32 to the driver. There may be any number of rollers in the mill, a scraper being provided for each roller.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is- 1. In a crushing mill of the roller type the combination of a pan, screens in the pan-rim, a crushing roller in the pan inwardly inclined from the bottom upwardly, said roller having the inner side of its crushing surfaces in clinedto its axis of rotation to form a straight horizontal portion at the bottom, and having the remainder of its crushing surface parallel with the axis of rotation to form a straight upwardly inclined outer portion; a ring die in the pan against which the crushing roller acts, said die having its crushing surface formed with a straight horizontal inner portion and a straight upwardly inclined outer portion, to correspond with the crushing surface of the roller and a driving means for effecting the orbital travel of the roller in the pan, said driving means including pivotal connections to enable the roller to swing centrifugally.

2. v.In a crushing mill of the roller type, a crushing roller, a driver including a horizontally disposed plate, and a connection between the roller and its driver comprising a crank having a hub at each extremity, a pin seated in the axis of the roller and secured at its end to one of the crank hubs, and a hanger, depending from the horizontally disposed plate, having at its lower end a sleeve in which the other hub ol the crank is pivotally mounted.

3. In a crushing mill of the roller type, a .crushing roller, a driver including a horizontally disposed plate provided with feed passages therethrough and a connection between the roller and lits driver to support the roller wholly from its inner side, said connection comprising a crank having a hub at each extremity, a pin seated in the axis of the roller and secured at one end to one of the crank hubs and a hanger depending from the horizontally disposed plate having at its lower end a sleeve lying to the outer side of the vertical plane of the feed passages in the horizontally disposed plate to pivotallT support the other hub of the crank.

4. In a crushing mill of the roller type, the connection between the roller and its driver comprising .a crank having a hub at each extremity, one of said hubs being iitted to the inner side of the roller, a pin secured to said hub and passing through the axis of the roller, a nut fitted to the outer end of the pin, and a washer against which the nut acts to set up the bearing of the roller to the hub, and a hanger secured to the driver and having at its lower end a sleeve, in which is pivotally mounted the other hub of the crank.

5. In a crushing mill of the roller type, the connection between the roller and its driver comprising a crank having a hub at each extremity, one of said hubs being fitted to the inner side of the roller, a pin secured to said hub and passing through the axis of the roller, a nut fitted to the outer end of the pin, and a washer against which the nut acts to set up the bearing of the roller to the hub, a hanger secured at its upper end to the driver, and having at its lower end a sleeve, in which is pivotally itted the other hub of the crank, a pin Jfitted to said hub, a nut on the pin end, and a washer seated in the sleeve and against which the nut bears to hold said sleeve to the hub.

In testimony whereotl I have signed my name to this specification in the presence of two subscribing witnesses.

FRANK A. HUNTINGTON IlVitnesses:

N. A. ACKER, L. E. WILKINs. 

